Asus zenfone 4 is good smartphone in this range. Having 5mp camera, and 3g in both sim & intel processor makes it great phone. Having great feature, it also have demerits such as flash is not available. So u can not use it in night for photography.
When it in 3g mode and u r using net it will be heated up. And battery is not enough it is only 1650mAh. So u can go or not go for